EP 0207243 A3 19881019 - ERROR CORRECTION MECHANISM
Title (en)
ERROR CORRECTION MECHANISM
Publication
Application
Priority
US 74140085 A 19850605
Abstract (en)
[origin: EP0207243A2] An error correcting scheme for processing data which is transmitted on a broadcast and/or CATV network and utilizes the IEEE 802.4 three-level duobinary AM/PSK (phase shift keying) coding format. The error correcting scheme utilizes two thresholders. One of the thresholders makes data (1 or 0) decisions while the other thresholder makes non-data or no non-data (non-data) decisions. Pattern matching and windowing are used to detect non-data symbols which are corrected if the non-data symbols deviate from a predetermined pattern. The template used in the pattern matching is determined from the state of a demodulator.
IPC 1-7
IPC 8 full level
G06F 11/10 (2006.01); H03M 5/02 (2006.01); H03M 13/00 (2006.01); H03M 13/37 (2006.01); H03M 13/45 (2006.01); H04J 9/00 (2006.01); H04L 1/24 (2006.01); H04L 25/06 (2006.01); H04L 25/497 (2006.01)
CPC (source: EP US)
H03M 13/37 (2013.01 - EP US); H04L 1/24 (2013.01 - EP US); H04L 25/06 (2013.01 - EP US); H04L 25/066 (2013.01 - EP US); H04L 25/497 (2013.01 - EP US)
Citation (search report)
- [AD] US 4118686 A 19781003 - LENDER ADAM
- [X] DATA COMMUNICATIONS, vol. 12, no. 6, June 1983, pages 225-227, New York, US; D.V. RATNER: "How broadband modems operate on token-passing nets"
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0207243 A2 19870107; EP 0207243 A3 19881019; EP 0207243 B1 19920708; CA 1233233 A 19880223; DE 3685914 D1 19920813; DE 3685914 T2 19930225; JP H0258816 B2 19901210; JP S61281721 A 19861212; US 4677627 A 19870630
DOCDB simple family (application)
EP 86105484 A 19860421; CA 510245 A 19860528; DE 3685914 T 19860421; JP 8841886 A 19860418; US 74140085 A 19850605